Is simple calculation no longer usable!? The upcoming selection calculations for expansion devices.
Explanation of the six main changes! Publication on the revised method of selection calculations in the Road Bridge Design Guidelines.
In November 2017, the Road Bridge Design Guidelines were revised. In particular, significant changes were made to fundamental aspects such as the verification methods and live load stresses, which are essential for design and estimation. Additionally, there have been additions and modifications to the formulas related to expansion devices. The Expansion Device Navi mainly introduces the changes in the selection calculation methods as outlined in the Road Bridge Design Guidelines. For more details, please refer to the related links. [Contents] ■ Changes ■ Summary * For more information, please check the related links page or feel free to contact us.
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CRETEC, a company under Crittec Industries, was born from the combination of Create (creation) and Technology. As a comprehensive manufacturer of bridge expansion devices, we continue to develop expansion devices that contribute to the longevity of bridges and environmental protection. Moreover, we do not stop at product manufacturing; by consistently handling everything from research, design, manufacturing, sales, to construction in-house, we can manufacture and install expansion devices that meet the requests of our clients and general contractors, as well as the conditions and environments of the bridges and roads on-site. We also take into account the issues that arise during the installation of expansion devices and the damage conditions of existing devices that are removed, using this information to improve and develop our products. Please feel free to contact us for inquiries about bridge expansion devices, requests for materials, or estimates. ◆ What is a bridge expansion device? It is a component installed in the gap between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to create a gap to prevent the bridge girders from colliding due to expansion and contraction caused by temperature changes. The bridge expansion device is required to cover this gap and ensure safe passage for vehicles and pedestrians.